Eric Biggers 75f9e994b9 drm/vkms: fix use-after-free when drm_gem_handle_create() fails ... commit 36b6c9ed45 upstream. If drm_gem_handle_create() fails in vkms_gem_create(), then the vkms_gem_object is freed twice: once when the reference is dropped by drm_gem_object_put_unlocked(), and again by the extra calls to drm_gem_object_release() and kfree(). Fix it by skipping the second release and free. This bug was originally found in the vgem driver by syzkaller using fault injection, but I noticed it's also present in the vkms driver. Fixes: 559e50fd34 ("drm/vkms: Add dumb operations") Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Cc: Haneen Mohammed <hamohammed.sa@gmail.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190226220858.214438-1-ebiggers@kernel.org Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-04-03 06:26:26 +02:00
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drm	drm/vkms: fix use-after-free when drm_gem_handle_create() fails	2019-04-03 06:26:26 +02:00
host1x	gpu: host1x: Check whether size of unpin isn't 0	2018-07-09 10:31:30 +02:00
ipu-v3	gpu: ipu-v3: Fix CSI offsets for imx53	2019-03-23 20:09:41 +01:00
vga	vga_switcheroo: Fix missing gpu_bound call at audio client registration	2018-11-13 11:09:00 -08:00
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